English Oak
- Ben Thomas
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English Oak
My pre bonsai English Oak has a strange thing happening to its leaves. Only got it a few months ago from Necises, growing well, but I don't like the look of these grey patches. Any ideas??
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Re: English Oak
Hi
That is Powdery Mildew.
http://en.wikipedia.org/wiki/Powdery_mildew
Typically a result of humid conditions.
That is Powdery Mildew.
http://en.wikipedia.org/wiki/Powdery_mildew
Typically a result of humid conditions.
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Dennis
A journey full of experiments
Dennis
A journey full of experiments
- kcpoole
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Re: English Oak
Yep kep it in full sun and not on a crowded bench.
Give it its own space so that air can circulate around it.
None of mine have had any issues but i am in western sydney. if you are closer to the beaches you will be more humid.
Ken
Give it its own space so that air can circulate around it.
None of mine have had any issues but i am in western sydney. if you are closer to the beaches you will be more humid.
Ken
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Re: English Oak
Hi Ben I had the same problem I sprayed the tree with Fungo Rid twice, this did not help I then defoliated the tree completely and then sprayed with Lime Sulfur in three weeks new flush of leaves and no sign of Powdery mildew
Cheers John
Cheers John
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Re: English Oak
I had it on two of my collected oaks. Defoliated the entire tree and didn't get it back with the new growth. I didn't actually spray anything, was going to but didn't get time to it but had no sign of it on the new growth so didn't bother I the end.
Josh
Josh
- Sammy D
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Re: English Oak
Just simply spay with a monthly dose of sulfur from when it first shoots in spring till end of summer. Also avoid wetting the foliage when watering and all will be fine. Same as vines or people in glass houses with zuchini and watermelon.
A stick in a pot is better than no stick at all. Remember even the best bonsai started as a stick.
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Re: English Oak
I have a couple of oak's growing in some grow beds..
I believe that they are certainly not in a humid location but this problem persists for my trees.
As they are simply growing on (and seemingly not affected) I've just let them go..
I believe that they are certainly not in a humid location but this problem persists for my trees.
As they are simply growing on (and seemingly not affected) I've just let them go..
One of the fabulous things about growing bonsai is as you get old and decrepit your trees get old and beautiful
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Re: English Oak
http://www.bonsai4me.com/SpeciesGuide/Quercus.html
thats a great website i visit often when researching new species. gives good advice on general care, and funnily enough emphasises good air circulation to stop mildew issues on oak.
thats a great website i visit often when researching new species. gives good advice on general care, and funnily enough emphasises good air circulation to stop mildew issues on oak.
Acer buergerianum, Acer palmatum, Bougainvillea (something), Ficus microcarpa, Lagerstroemia indica 'Fauriei', Melaleuca styphelioides, Olea Europa, Prunus (something) 'Dwarf Apricot', Quercus robur, Ulmus parvifolia, Zelkova serrata
- Ben Thomas
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Re: English Oak
Thanks Ken. Im in North Ryde.kcpoole wrote:Yep kep it in full sun and not on a crowded bench.
Give it its own space so that air can circulate around it.
None of mine have had any issues but i am in western sydney. if you are closer to the beaches you will be more humid.
Ken
Space and sun it shall have!
- Ben Thomas
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Re: English Oak
Thanks for all the opinions. Will think on it, do something this weekend.
Im keen on not spraying, and its easy for me to give it more sun and space. Ill think on it at work over the rest of the week.
Cheers.
Im keen on not spraying, and its easy for me to give it more sun and space. Ill think on it at work over the rest of the week.
Cheers.
- GoldfieldsBS
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Re: English Oak
I get the same thing when watering in the evening. I've found that if you keep the water off the leaves or water earlier in the day so they can dry before the evening. Defoliation also has worked for me.
- kcpoole
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Re: English Oak
Interesting thought there as I water by fixed sprayers, but @ 7 am so dry within a few short hours, and thus the rest of the day too.GoldfieldsBS wrote:I get the same thing when watering in the evening. I've found that if you keep the water off the leaves or water earlier in the day so they can dry before the evening. Defoliation also has worked for me.
Ken
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Re: English Oak
I've had great success with milk spray . Simply mix milk with water 50/50 , spray all over both sides of leaves etc . Spray as needed or if it's a real problem every 4 to 5 days or after rain . Got this from Jackie French . The leaves tend to have a glossy look and sometimes you get a bit of milk residue . Cheap and safe can't go wrong .
Cheers Sno
Cheers Sno
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Re: English Oak
You mentioned you got the oak tree from Necises, I have googled this and get nothing, I am trying to locate an english oak starter tree and would really appreciate any help.